Disable GNOME 3.14's geolocation framework

The GNOME 3.14 release notes read: “GNOME’s weather app has been redesigned for 3.14. The new version makes use of GNOME’s new geolocation framework to automatically show the weather for your current location”. We need to make sure, for Tails/Jessie, that this geolocation framework is disabled.

Related issues

Related to #5306 (closed)

Original created by @intrigeri on 7949 (Redmine)

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